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High-Resolution Laser Spectroscopy of a Functionalized Aromatic Molecule
Benjamin L Augenbraun1,2, Sean Burchesky1,2, Andrew Winnicki1,2
1Department of Physics, Harvard University, Cambridge, Massachusetts02138, United States.
The Journal of Physical Chemistry Letters
|November 14, 2022
Summary
We studied calcium(I) phenoxide (CaOPh) using laser spectroscopy. This research shows that functionalizing aromatic molecules can enable laser-based control for applications like laser cooling.
Area of Science:
- Molecular Spectroscopy
- Physical Chemistry
- Quantum Control
Background:
- Calcium-containing radicals are of interest for laser cooling applications.
- Aromatic molecules offer versatile platforms for chemical functionalization.
Purpose of the Study:
- To perform high-resolution laser spectroscopic studies of calcium(I) phenoxide (CaOPh).
- To analyze the òB₂-X̃²A₁ and B̃²B₁-X̃²A₁ transitions.
- To explore the potential for laser-based control of functionalized aromatic molecules.
Main Methods:
- High-resolution laser spectroscopy was employed.
- Rotationally resolved band systems were analyzed.
- An effective Hamiltonian model was used for accurate modeling of transitions.
Main Results:
- The òB₂-X̃²A₁ and B̃²B₁-X̃²A₁ transitions of CaOPh were studied.
- Transitions were accurately modeled as independent perpendicular (b- or c-type) bands.
- The structure of CaOPh was compared to other Ca-containing radicals.
Conclusions:
- Functionalization of aromatic molecules with optical cycling centers preserves properties for laser-based control.
- The findings suggest potential for direct laser cooling of CaOPh.
- This study advances the understanding of molecular structures for quantum control applications.
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